Reinforced core for cement-block molds.



F. ZAGELMEYER. REINFORCEDCOBE FOR CEMENT BLOCK Moms.v

APPLICATION FILED BAR. 10. I917.

Patented Oct. 30, 191?.

' it appertains to molds and pertains more sembled core.

STATES PATENT orrIcE.

FRANK Z AyGELME YER, OF BAY CITY, MICHIGAN.

To all whom it may concern:

Be it known that I, FRANK ZAGELMEYER, a citizen of the United States, residing at Bay City, in the county of Bay and State of 18 useful Improvements in Reinforced Cores for Cement-Block-Molds; and I do hereby declare the following to be a full, clear, and exact description ofthe invention, such as Will enable others make and use the same.

relates to cement block particularly to an collapsible sheet This invention improved construction for metal cores adapted to be used in multiple cell molds, such as are commonly employed in the of cement blocks by the wet or pouring method.

A multiple cell mold of the class referred to is illustrated and described in. my copending application, Serial N 0. 746,943 filed Feb. 7, 1913, Patent No. 1,218,737.

My present improvement relates more specifically forced end for the collapsible hollow core.

With these and certain other objects in view, which will appear later in the specification, n1 invention comprises the devices descri ed and claimed and the equivalents thereof.

My improvement is illustrated in the accompanying drawings, in which Figure 1 is a perspective view of the end of a collapsible core, the walls of which are made of sheet metal and reinforced in accordance with my present improvement.

Fig. 2 is a. longitudinal section on the line 22 of F 1.

Fig. 3 is 2. end of a truck on which is mounted a multiple cell mold, cores constructed in accordance with my present improvement.

As is clearly shown in the drawings, the device consists in the sheet metal ,core comprising four angular pieces of sheet metal 1, 2, 3, 4, two of the diagonally o posite pieces, as 1 and 3 being aI'ran with their edges overlapping the contiguous ed of the other two dia onal pieces, as 2 an 4.

To strongly reinfiirce the extremities of the angular core members, I; preferably fold back the ends of the pieces 1 and 3 upon themselves and bend the pieces 1 and 3 so that their overlappin ends 5 and 6 will form strips lying on e outside of the as- The ends of the opposing lichlgan, have invented certain new and skilledinthe arttowhich I to the construction of a min perspective detail showing one.

' the mold.

. ment for the nnmroncnn 00312 FOR cnmnNT-BLocx MOLDS.

' Patented Oct. 30, 1917.

Application filed March 10, 1917. Serial No.'153, 4 7.

diagonal pieces 2 and 4 are similarly folded back upon themselves and the pieces are then bent so that the overlapping ends, 7 and 8, will lie on the inside of the assembled core, asshownin Fig. 1.

By this arrangement, the overlapping edges of the adjacent members, as 1 and 2, lie close together and leakage of cement between them is prevented.

The folded, and consequently double remforced ends of the members 1, 2, 3, 4 are suiiiciently stron to withstand the action 'of a pry bar sue "as is commonly used to telescope or collapse the cores after the blocks are cast. p

Heretofore inconvenience and dam bars against the unreinforced projectihg ends of the core members, and to avoid'this difliculty is one of the objects of my present im rovement. p v

' t will be seen-by reference to Fig. 2 that the core can be properly and accurately positioned with reference to the multiple cell mold by utilizing the edge of the overlapped part as a sto to engage wall 9 of the multiple mold.

7 The members of the mold may be secured together in their expanded position and released for collapsing by means of the bolts 10, or their equivalents.

By the means above described need a simple, the outer ends of collapsible sheet metal cores for multiple concrete molds, that is inexpensive to manufacture, rable in operation, that enables the members of the mold to remain closely in. contact with each other to prevent leakage of cement. This reinforcing afl'ords suitable bearing against which a pry bar may be forced to collapse the mold, without distorting the members of the mold, and the reinforced edges of the diagonally opposite reinforcing members also serve as stops to enable the core to be'quickly and accurately positioned with reference I have pro- Having thus described my invention, what I claim and desire to secure by Letters Patent is:

1. In a collapsible sheet metal core for use in multiple concrete molds, a reinforceends of the members of said core, comprising a reinforcing strip formed by folding outwardlyrupon themselves the yet effective reinforcing for 1 strong and dutothe walls of.

ends of diagonally opposite core members, and by folding inwardly upon themselves the ends of the remaining core members, for the purposes set forth! 2. In a collapsible sheet metal core for use in multiple concrete molds, a reinforcement for the ends of the members of said core, comprising a reinforcing strip secured to the end of each of the core members, the strips on two diagonally opposite members being secured on the outside of said members, and the strips on the remaining two melee? diagonally opposite members being secured on the inside of said members, said first mentioned strips forming exterior stops to 5 engage the edges of the core-receiving openin? of said mold.

. n testimony whereof, I afix my signature in presence of two witnesses.

v FRANK ZAGELMEYER.

Witnesses:

NELLm M. Aim-Us, ROY WALLIS. 

